Invention Grant
- Patent Title: Tapered lobular driver and fastener
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Application No.: US13593103Application Date: 2012-08-23
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Publication No.: US11215215B2Publication Date: 2022-01-04
- Inventor: Richard W. Lukes
- Applicant: Richard W. Lukes
- Applicant Address: US IA Calmar
- Assignee: Richard W. Lukes
- Current Assignee: Richard W. Lukes
- Current Assignee Address: US IA Calmar
- Agency: Kegler Brown Hill + Ritter LPA Co
- Agent Lorraine Hernandez
- Main IPC: F16B23/00
- IPC: F16B23/00 ; B25B15/00 ; B25B13/06

Abstract:
A torque transmission driver has a first end portion adapted to receive and transmit torque from a torque generation source, and a second end portion including a shaped tapered bit having drive surfaces with an alternating series of five or six lobes and troughs about a rotational axis, having a taper angle between 15 and 45° from the rotational axis operable to engage corresponding drive surfaces in a plurality of at least two size fasteners, the tapered drive surfaces of the bit comprising a first tapered portion operable to engage drive surfaces of a first sized fastener and a second tapered portion operable to engage drive surfaces of a second sized fastener, the drive surfaces of the second sized fastener being larger than the drive surfaces of the first sized fastener.
Public/Granted literature
- US20130213193A1 TAPERED LOBULAR DRIVER AND FASTENER Public/Granted day:2013-08-22
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